Comment Re:Engineering (Score 1) 643
Depends where the computer got its data.
If the data came from the same speed sensor the car's speedometer uses (a sensor on the transmission), then the moment the car left the road the rear wheels would be spinning on grass or whatever else he was traveling over.
If the black box used the input from the ABS system, that should be based on 3 or 4 sensor that measure actual wheel speed.
Typically the black boxes record the last 5 or 10 seconds before an air-bag deployment event. 5 seconds would be a long time at 75mph (~100 ft per second). So you should be able to trend the data and correspond that with the maximum acceleration of the car.
I suspect a 300hp Crown Vic would take quite some time to go from 75mph to 105... like 10 seconds. I base this on the belief that the car's 0-100 times are on the order of 17 seconds (and I suspect never reaching 100mph in those 17 seconds).